Evidences that evolution of life forms has indeed taken places on earth has come from many quarters.

Paleontological evidences : Paleontology is the study of fossils (i.e. remains of hard parts of life forms found in rocks.)

Rocks form sediments and a cross-section of the earth' scrust depicts the arrangement of these sediments one over the other, during the long history of earth.

Sediments of different aged rocks contain fossils of different life forms that lived and died during the formation of a particular segments.

– Some of them appear similar to modern organism. They represent extinct organisms like dinosaurs.

– The study of fossil in different sedimentary layers indicates the geological period in which they existed.

It also shows that the life forms varied over times and certain life forms are restricted to certain geological time scale.

– Hence new forms of life have evolved at different time in the history of earth.

– All this is called paleontology evidence.